package Meituan;

import java.util.HashMap;
import java.util.Map;

/**
 * @author: leiwenkang02@meituan.com
 * @date: 2018/5/5
 * @time: 23:36
 */
public class Test03 {
    public static void main(String[] args) {
        Map<Integer, Integer> map = new HashMap<>();
        Integer num = map.get(1);
        System.out.println(num);
    }
}
